<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">非遗文化管理后台</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          auto-complete="off"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input
          v-model="loginForm.password"
          type="password"
          size="large"
          auto-complete="off"
          placeholder="密码"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>
      <el-form-item prop="code" v-if="captchaEnabled">
        <el-input
          v-model="loginForm.code"
          size="large"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter="handleLogin"
        >
          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img"/>
        </div>
      </el-form-item>
      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="large"
          type="primary"
          style="width:100%;"
          @click.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2018-2025 ruoyi.vip All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'

const userStore = useUserStore()
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};

const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

watch(route, (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
}, { immediate: true });

function handleLogin() {
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 });
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        const query = route.query;
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== "redirect") {
            acc[cur] = query[cur];
          }
          return acc;
        }, {});
        
        // 判断是否是管理员登录
        if (route.path === '/admin/login') {
          router.push({ path: '/admin/index', query: otherQueryParams });
        } else {
          router.push({ path: redirect.value || "/user/home", query: otherQueryParams });
        }
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCode();
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.2)), url("@/assets/images/login-background.jpg");
  background-size: cover;
  background-position: center;
  position: relative;
  
  &::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    backdrop-filter: blur(2px);
    z-index: 0;
  }
}

.login-form {
  position: relative;
  z-index: 1;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.98);
  width: 380px;
  padding: 30px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  backdrop-filter: blur(10px);
  transition: all 0.3s ease;

  &:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  }

  .title {
    text-align: center;
    margin: 0 0 30px;
    font-size: 24px;
    color: #2c3e50;
    font-weight: 600;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 15px;

    &::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 50%;
      transform: translateX(-50%);
      width: 50px;
      height: 3px;
      background: linear-gradient(90deg, #409EFF, #79bbff);
      border-radius: 3px;
    }
  }

  .el-input {
    height: 42px;

    :deep(input) {
      height: 42px;
      padding-left: 42px;
      background: #f8f9fa;
      border: 2px solid transparent;
      border-radius: 10px;
      font-size: 14px;
      color: #2c3e50;
      transition: all 0.3s ease;

      &::placeholder {
        color: #a8adb3;
      }

      &:hover {
        background: #f0f2f5;
      }

      &:focus {
        background: #fff;
        border-color: #409EFF;
        box-shadow: 0 0 0 3px rgba(64, 158, 255, 0.1);
      }
    }
  }

  .login-code {
    width: 35%;
    height: 42px;
    float: right;
    margin-left: 8px;

    img {
      width: 100%;
      height: 100%;
      cursor: pointer;
      border-radius: 10px;
      transition: all 0.3s ease;
      border: 1px solid #e4e7ed;

      &:hover {
        opacity: 0.8;
        transform: scale(1.02);
      }
    }
  }

  .el-button {
    height: 42px;
    font-size: 15px;
    font-weight: 500;
    border-radius: 10px;
    transition: all 0.3s ease;
    margin-bottom: 15px;
    background: linear-gradient(90deg, #409EFF, #79bbff);
    border: none;

    &:hover {
      transform: translateY(-2px);
      box-shadow: 0 5px 15px rgba(64, 158, 255, 0.3);
      background: linear-gradient(90deg, #3a8ee6, #66b1ff);
    }

    &:active {
      transform: translateY(0);
    }
  }
}

.el-login-footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  padding: 20px 0;
  font-size: 12px;
  letter-spacing: 1px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  z-index: 1;
}

// 响应式设计
@media screen and (max-width: 576px) {
  .login-form {
    width: 85%;
    padding: 25px;
    margin: 15px;

    .title {
      font-size: 22px;
      margin-bottom: 25px;
      
      &::after {
        width: 40px;
      }
    }

    .el-input {
      height: 40px;

      :deep(input) {
        height: 40px;
        font-size: 14px;
      }
    }

    .login-code {
      height: 40px;
    }

    .el-button {
      height: 40px;
      font-size: 14px;
    }
  }
}
</style>
